Musical prodigy Levi Shetler hasn't touched a piano since he secretly played one years ago. His strict Amish community forbids instruments or the singing of any music not in their approved songbook. Levi asks God often why music tempts him when playing an instrument isn't allowed in his world.

One person knows Levi's talents: Mary Hershberger, the girl who promised years ago to keep his secret. Mary comes from a more liberal district than Levi, but she's facing family troubles of her own. The mutual care for an aging Englischer, Adeline, reunites Mary and Levi as young adults. They realize that, despite their differences, they have a shared love of music--and a shared confusion about whether their talents are God-given gifts or temptations luring them into the Englisch world.

The couple realizes they must compromise or part ways, but a tragic accident shakes their decision. Both Mary and Levi will need to reconcile what they love with what their hearts say is right--because even as their passion for music brings them together, it could be what tears them apart.

The first novel in the new Amish Journeys series by bestselling author Beth Wiseman, Hearts in Harmony explores how far the heart will travel for the melody of love.